Waveguide slot applicators for microwave heating

Optimal Constrained Field Focusing for Hyperthermia Cancer Therapy: A Feasibility Assessment on Realistic Phantoms

“…In particular, the challenging requirements for these devices (e.g., the ability to focus the field and modify the absorbed power distributions during use, while being light and compact) have addressed the efforts towards the design of array configurations, where a suitable choice of the amplitude and phase of the excitations makes it possible the realization of desired radiation patterns. Hence, applicators based on different kind of linear [6,7], planar [8], hexagonal [9], circular [10,11], cylindrical [12], spherical [13], elliptically bent [14] and annular arrays [15] have been considered in the literature. More recently, other solutions have been considered, such as the use of left-handed metamaterials to improve focusing capabilities in shallow tumors treatments [16], or the adoption of deformable mirrors [17] or ultra-wide-band beamformers [19,20] in breast cancer therapy.…”

Elliptically Bent Slotted Waveguide Conformal Focused Array for Hyperthermia Treatment of Tumors in Curved Region of Human Body

“…A number of studies on array configurations using different types of applicators for hyperthermia treatment of cancer have been reported in the literature [2][3][4][5][6][7][8][9][10], such as linear array [2,3], planar array [4], hexagonal array [5], circular/ring array [6,7], cylindrical array [8], spherical array [9], annular phased array [10] and many other array configurations using waveguides, horns etc.…”